NJM2542

NJM2542 www.DataSheet4U.com VIF/SIF Demodulator „ DESCRIPTION The NJM2542 is a VIF/SIF demodulator especially designed for TV and VCR based on the NTSC system. FM-PLL(Phase Locked Loop) detector reduces the number of pins and external parts, for efficient use of set space. „ FEATURES Operating Voltage 5V Alignment-free Automatic Frequency Tuning Alignment-free FM-PLL Demodulator Intercarrier type Bipolar Technology Package Outline: SSOP20 NJM2542V „ PACKAGE OUTLINE „ BLOCK DIAGRAM AGCFLT1 AFTOUT RFAGC ADJ RFAGC OUT 20 19 18 17 16 15 14 13 12 11 AGC AFT IFAMP SVCO APC EQAMP DET AFAMP FMDET LIM VCO 1 EQOUT 2 APCFLT 3 EQIN 4 V+ 5 VCOL1 6 VCOL2 7 VREF 8 VDETOUT 9 AGCFLT2 10 LIMIN AFOUT AFNFB IFIN2 IFIN1 GND EQ -1- NJM2542 www.DataSheet4U.com „ ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage Vcc Power Dissipation PD Operating Temperature Range Topr Storage Temperature Range Tstg * Test IC soldered on PC board Ratings 6 *600 -20 to +80 -40 to +150 (TA=25°C) Unit V mW °C °C (TA=25°C) Max. Unit 5.25 V „ RECOMMENDED OPERATING VOLTAGE RANGE Parameter Condition Operating Voltage „ ELECTRICAL CHARACTERISTICS Standard Test Conditions: Symbol Vcc Min. 4.75 Typ. 5.0 (TA =25°C,Vcc=5V,IF=45.75MHz/90dBuV,IF IN has 1:1Transformer instead of SAW filter.) Parameter Condition Symbol Min. Typ. AFT-Defeat Supply Current Icc 51 IFGR-MAX(AGCFLT=GND) VIF Section (45.75MHz/90dBuV) No IF Signal Video Output Level (DC) VDC 3.6 FGR-MAX(AGCFL...